JPH08138299A - Magnetic recording device - Google Patents

Abstract

PURPOSE: To attain miniaturization and cost reduction of a device by making a driving source to be used in common for magnetic head loading and a disk eject mechanism. CONSTITUTION: A magneto-optical disk 101 is loaded into a clamp fixed on a spindle motor. In this state, an eject motor 114 is rotated first by the command for recording, and by the rotation of a gear B117 linked therewith, a lifter 121 is slid, thereby the magnetic head 111 is loaded. The motor 114 is inversely rotated at the time of unloading, and the lifter 121 is recovered to the unloading position by a load spring 125 to unload the head 111. When the disk 101 is ejected, the motor 114 is rotated to the unload side of the head 111, and a trigger lever 106 is engaged with a slider 107 when the slider 107 is moved and come up to the prescribed position. The cartridge 102 in a cartridge holder 103, which is moved upward by the movement of the slider 107, is pushed out by a shutter lever 105 and ejected outside the holder 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording apparatus for recording / reproducing information using a magneto-optical disk or a magnetic disk, and more particularly to a magnetic head loading mechanism and a magnetic disk ejecting mechanism.

[0002]

2. Description of the Related Art Recently, M for music using a magneto-optical disk
It is expected that a D (Mini Disc) player will be put into practical use, and an overwritable drive using a magneto-optical disk will appear as a computer external recording device in the future.

In the aforementioned MD player for music,
The mechanism for loading and unloading the magnetic head is performed by a dedicated motor. As an external recording device for a computer, JP-A-1-102760 and JP-A-6-2 are available.
As shown in 0326, a mechanism using an electromagnet and a mechanism using a solenoid have been devised, as shown in FIGS. 1 and 2 of the actual Kaihei 3-80562.

[0004]

However, in the mechanism for loading and unloading the magnetic head with the dedicated motor as described above, the drive volume is occupied by that amount, so that the disk top type or laptop type personal computer can be used. It is disadvantageous for making the drive compact and thin (half height, that is, 41.3 mm or less) that can be mounted. In addition, it is disadvantageous in terms of cost to provide dedicated parts.

When an electromagnet (solenoid) is used, not only is it disadvantageous in reducing the size and thickness and the cost as in the case of a dedicated motor, but it is also difficult to load the magnetic head.
Since the unloading operation is performed instantaneously (50 msec or less), when the magnetic head comes in contact with or separates from the disk, the impact may disturb the servo of the optical head and make the operation unstable.

Therefore, an object of the present invention is to provide a magnetic head loading and disk ejecting mechanism in which a driving source of the mechanism is shared in order to realize a small-sized, thin and low-cost magnetic recording device.

[0007]

[Means for Solving the Problems]

(1) In the magnetic recording apparatus of the present invention, after the magnetic disk is inserted, the magnetic disk is rotatably supported and fixed by the turntable fixed to the rotation shaft of the spindle motor, and the magnetic head is used to record the information when the information is recorded. In the mechanism for loading on the surface of the magnetic disk, the magnetic head is loaded to the surface of the magnetic disk at an arbitrary position of the radius of the magnetic disk, and is unloaded after the recording is finished, and the magnetic disk is instructed by an ejection command. And a second drive means for automatically ejecting to the outside of the apparatus, and the drive source of the first drive means and the drive source of the second drive means are the same.

(2) Further, in (1), the first drive means and the second drive means are respectively constituted by a transmission and reduction mechanism composed of a plurality of gears, and
Both mechanisms are configured with the same gear ratio.

(3) Further, in (2), the loading operation of the magnetic head is completed within one rotation of the final output gear of the first driving means, and the ejecting operation of the disk is the second driving operation. It is characterized in that it is completed by one rotation of the final output gear in the means.

[0010]

【Example】

(Embodiment 1) FIG. 1 shows a front view of a magnetic recording apparatus according to an embodiment of the present invention. In this example, the maximum outer shape is 203.0 mm in length, 146.0 mm in width, and 41.3 in height with the magnetic head 111 for overwriting fixed to the optical head 112 via the carriage 113 and moving integrally.
The size is mm (half height), and it is a size that can be installed in the slot of a desktop computer. 2 and 3 are side views.

When the cartridge 102 containing the magneto-optical disk 101 is inserted into the magnetic recording apparatus, the cartridge lever 10 mounted on the cartridge holder 103 is operated by the cartridge shutter 10 of the cartridge 102.
4 is opened. When the cartridge 102 is continuously inserted and reaches a predetermined position, the shutter lever 105 releases the engagement between the trigger lever 106 and the slider 107, and the slider 107 moves in the horizontal direction by the load spring 108. At the same time, the cartridge holder 10
By moving 3 downward, the magneto-optical disk 101
Clamp 1 fixed to the spindle motor 109
The optical disk 101 is mounted on the disk 10, and the loading of the magneto-optical disk 101 is completed.

In this state, the magnetic head 111 is loaded so as to be in contact with the magneto-optical disk 101 in response to an information recording command. 4 and 5 show the operation of magnetic head loading / unloading. First, the eject motor 114 rotates and is transmitted to the gear A 116 via the worm gear 115 fixed to the eject motor 114, and further transmitted to the gear B 117. The gear B 117 is provided with a pin 118 for driving a lifter 121 which is a member for directly loading and unloading the magnetic head 111. The rotation of the gear B 117 causes the pin 118 to push the shutter 122 integrally joined to the lifter 121, and the lifter 121 slides to load the magnetic head 111. Then, the sensor A123 detects the lifter 121 which has reached a predetermined position, the current supply to the eject motor 114 is cut off, and the series of loading operations is completed. Eject motor 11 when unloading
When the pin 4 rotates in the reverse direction and the pin 118 moves in the direction opposite to that at the time of loading, the lifter 121 is returned to the unload position by the load spring 125, and the magnetic head 111 is unloaded. Then, when the sensor B124 detects the initial position of the gear B117, the unloading operation is completed.

6 and 7 show the operation of the magneto-optical disk eject. When ejecting the magneto-optical disk 101, the eject motor 114 rotates to the unload side of the magnetic head 111 and is transmitted to the gear C119 via the gear A116. Pin 1 on gear C119
20 is provided, and the pin 120 pushes the slider 107 as the gear C119 rotates,
When the trigger lever 106 reaches a predetermined position, the trigger lever 106 moves the slider 1
Engage with 07. The cartridge 10 in the cartridge holder 103 moved upward by the movement of the slider 107.
2 is pushed out by the shutter lever 105 and discharged to the outside of the cartridge holder 103. The gear C119 continues to rotate, and when the sensor B124 detects that the gear B117 rotating together with the gear C119 reaches the initial position, the current supply to the eject motor 114 is cut off, and the eject operation is completed. At this time, the pin 118 provided on the gear B 117 is
The shutter 122 is structured to be rotatable only in this direction, although it faces the load roller 22 in a direction opposite to that when the load is loaded, so that the lifter 121 can be returned to the initial position without being affected.

As described above, in the present embodiment, the drive source of the first drive means for loading the magnetic head onto the disk surface at an arbitrary position of the magneto-optical disk and unloading after the end of recording, and the discharge command are used. The drive source of the second drive means for automatically ejecting the magneto-optical disk to the outside of the apparatus is the same.

Further, in this embodiment, the gears B117 and C119 have the same gear specifications. Therefore, the gear B117 and the gear C119 are in the same direction,
Rotate the same amount. As described above, when the magnetic head is loaded / unloaded, the rotation amount of the gear B117 is within one rotation, and the reciprocating motion with the initial position is performed. On the other hand, when the magneto-optical disk is ejected, the rotation amount of the gear C119 is one rotation, and the direction is only one direction. Therefore, even if the eject operation is repeated, the gear B117, the gear C11
The initial position can always be maintained without shifting the phase of 9.

As described above, in this embodiment, the first drive means for loading / unloading the magnetic head and the second drive means for ejecting the disk respectively include a transmission and reduction mechanism composed of a plurality of gears. The magnetic head loading and disk eject mechanism is characterized in that both mechanisms are configured with the same gear ratio.

It should be noted that there is no problem if the transmission and deceleration mechanism is composed not only of gears but of a combination of gears and belts and pulleys. FIG.
The configuration is shown in. In this case, the first and second driving means are characterized by being configured with the same transmission and deceleration ratio. According to this configuration, the adjustment between the pulley shafts can be performed by the belt length, so that the degree of freedom in design is further increased as compared with the case where only the gear is configured. Further, the loading / unloading operation of the magnetic head is completed within one rotation of the final output gear in the first driving means, and the ejecting operation of the disk is completed in one rotation of the final output gear in the second driving means. It is configured to end.

As described above, according to this embodiment, the same motor can be used to load / unload the magnetic head and eject the disk, and there is no problem even if the respective operations are continuously performed. Therefore, it is possible to reduce the size and thickness of the magnetic recording apparatus using the magnetic head loading and disk ejecting mechanism of this embodiment and to reduce the cost.

[0019]

As described above, according to the present invention, in the magnetic recording apparatus, the drive means for loading the magnetic head to the magnetic disk surface and the ejecting command automatically eject the magnetic disk to the outside of the apparatus. By sharing the drive source of the drive means for achieving the above, it is possible to provide a magnetic head loading and disk ejecting mechanism which can reduce the number of parts and realize a compact and thin magnetic recording device at low cost.

It should be noted that the present invention is not limited to the above embodiment, and it is obvious that the present invention can be applied to an apparatus using a normal magnetic disk.

[Brief description of drawings]

FIG. 1 is a front view of a magnetic recording device that is an embodiment of the present invention.

FIG. 2 is a side view of a magnetic recording device according to an embodiment of the present invention.

FIG. 3 is a side view of a magnetic recording device according to an embodiment of the present invention.

FIG. 4 is a load / unload operation diagram of the magnetic head according to the embodiment of the present invention.

FIG. 5 is a load / unload operation diagram of the magnetic head according to the embodiment of the present invention.

FIG. 6 is a diagram showing an eject operation diagram of a disc according to an embodiment of the present invention.

FIG. 7 is an ejecting operation diagram of a disc according to an embodiment of the present invention.

FIG. 8 is a configuration diagram of a magnetic head loading and disk ejecting mechanism according to another embodiment of the present invention.

[Explanation of symbols]

 101 magneto-optical disk 102 cartridge 103 cartridge holder 104 cartridge shutter 105 shutter lever 106 trigger lever 107 slider 108 load spring 109 spindle motor 110 clamp 111 magnetic head 112 optical head 113 carriage 114 eject motor 115 worm gear 116 gear A 117 gear B 118 pin 119 Gear C 120 Pin 121 Lifter 122 Shutter 123 Sensor A 124 Sensor B 125 Load Spring 126 Pulley A 127 Pulley B 128 Pulley C 129 Belt

Claims (3)

[Claims] 1. A mechanism for rotatably supporting and fixing the magnetic disk by a turntable fixed to a rotation shaft of a spindle motor after inserting the magnetic disk, and loading a magnetic head on the surface of the magnetic disk at the time of recording information. In the above, the first drive means for loading the magnetic head to the surface of the magnetic disk at an arbitrary position of the radius of the magnetic disk and unloading after completion of recording, and automatically ejecting the magnetic disk according to a discharge command from the outside of the apparatus. A magnetic recording apparatus comprising: a second drive unit for ejecting, wherein the drive source of the first drive unit and the drive source of the second drive unit are the same. 2. The first drive means and the second drive means are each composed of a transmission and reduction mechanism composed of a plurality of gears, and both mechanisms are structured with the same gear ratio. The magnetic recording device according to claim 1, wherein 3. In the first driving means and the second driving means, the loading operation of the magnetic head is completed within one rotation of the final output gear in the first driving means, and the ejecting operation of the disk. 3. The magnetic recording apparatus according to claim 2, wherein is finished by one rotation of the final output gear in the second drive means.